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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/unix/sysv/linux/readonly-area.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'sysdeps/unix/sysv/linux/readonly-area.c')
-rw-r--r--sysdeps/unix/sysv/linux/readonly-area.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/readonly-area.c b/sysdeps/unix/sysv/linux/readonly-area.c
index ce5321bcef..69e926a7a1 100644
--- a/sysdeps/unix/sysv/linux/readonly-area.c
+++ b/sysdeps/unix/sysv/linux/readonly-area.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,6 +16,7 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdio_ext.h>
@@ -33,7 +34,19 @@ __readonly_area (const char *ptr, size_t size)
FILE *fp = fopen ("/proc/self/maps", "rc");
if (fp == NULL)
- return -1;
+ {
+ /* It is the system administrator's choice to not have /proc
+ available to this process (e.g., because it runs in a chroot
+ environment. Don't fail in this case. */
+ if (errno == ENOENT
+ /* The kernel has a bug in that a process is denied access
+ to the /proc filesystem if it is set[ug]id. There has
+ been no willingness to change this in the kernel so
+ far. */
+ || errno == EACCES)
+ return 1;
+ return -1;
+ }
/* We need no locking. */
__fsetlocking (fp, FSETLOCKING_BYCALLER);